CN101965699A - Automatic optimization of rf receiver interference performance - Google Patents
Automatic optimization of rf receiver interference performance Download PDFInfo
- Publication number
- CN101965699A CN101965699A CN2008801278074A CN200880127807A CN101965699A CN 101965699 A CN101965699 A CN 101965699A CN 2008801278074 A CN2008801278074 A CN 2008801278074A CN 200880127807 A CN200880127807 A CN 200880127807A CN 101965699 A CN101965699 A CN 101965699A
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- Prior art keywords
- receiver
- supply voltage
- interference
- measured
- voltage ripple
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/005—Reducing noise, e.g. humm, from the supply
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2215/00—Reducing interference at the transmission system level
- H04B2215/061—Reduction of burst noise, e.g. in TDMA systems
- H04B2215/063—Reduction of burst noise, e.g. in TDMA systems by smoothing the transmission power envelope
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Noise Elimination (AREA)
Abstract
A method and apparatus for optimization of RF receiver interference performance in a mobile phone operating in a TDMA communications system is disclosed. The battery supply voltage ripple of the battery of the mobile phone is measured and it is determining when the battery supply voltage ripple is greater than a predetermined level. The RF receiver is adjusted to improve the mode of operation of the RF receiver when the battery supply voltage ripple is greater than the predetermined level.
Description
Technical field
The present invention relates to the RF receiver, relate more particularly to be used for the RF receiver jamming performance of mobile phone is carried out the method and apparatus of Automatic Optimal.
Background technology
There is polytype digital communication system.Traditionally, to be used for spectrum division be a plurality of radio channels corresponding with different carrier frequencies to frequency division multiple access (FDMA).As what for example realized in digital AMPSAdvanced Mobile Phone Service (D-AMPS) and global system for mobile communications (GSM) standard digital cellular system, these carrier waves can further be divided into time slot, and this generally is called as time division multiple access (TDMA).Alternately, if radio channel is enough wide, then a plurality of users can utilize spread spectrum and code division multiple access (CDMA) to use same channel.
In mobile phone is used,, then exist the RF transmitter that the RF of RF receiver is disturbed if several RF transceivers are closer to each other.Traditionally, reach acceptable antenna-antenna isolation and select to arrange that well (each frequency band is required) different antennae avoids RF to disturb by realizing enough RF filters and being combined into, transmitter noise and spuious just, and owing to (band outer and) blocks the saturation of receiver that (compression) causes.If some radio are just using identical frequency band, then use additive method usually, for example RF coexistence PTA algorithm.
For being intended to be used for the receiver that mobile phone is used, for example, the GPS receiver is supported several different methods so that it is common improving (optimization) performance when having interference source, and wherein the RF interference source is based on system's (standard) of TDMA principle.For example, usually the signal that is used to enable the GSM transmitter (the normal duty factor (duty cycle) for this signal of GSM and transmitter is 1/8 or 2/8) from the mobile phone platform also can be imported into the GPS receiver, and this signal will be adjusted the interior gain of GPS receiver so that optimize performance.
The problem that said method exists is that the feature/function of optimizing performance under the environment that is often used in being easy to be interfered needs certain master control (software control) so that this feature that is provided by RF chipset provider to be provided.And the mobile phone hardware platform also may limit the use of this feature owing to lossing signal (strobe pulse).
Therefore, need a kind ofly to be used for Automatic Optimal RF receiver jamming performance and not have the method and apparatus of hardware and software problem recited above.
Summary of the invention
According to certain embodiments of the present invention, a kind of method that the RF receiver jamming performance in the mobile phone of operating in the tdma communication system is optimized of being used for is provided, and this method may further comprise the steps: the battery supply voltage ripple of measuring the battery of mobile phone; Determine that when the battery supply voltage ripple is greater than predetermine level; And, adjust the RF receiver to improve the operator scheme of RF receiver when battery supply voltage ripple during greater than predetermine level.
According to another embodiment of the present invention, the RF receiver in a kind of mobile phone of operating in the tdma communication system is provided, this RF receiver comprises: first band pass filter that is used for carrying out to received signal filtering; Be used for low noise amplifier that filtered received signal is amplified; Be used for frequency mixer that the signal after amplifying is carried out mixing; Be used for the signal after the mixing is carried out second band pass filter of filtering; And by the battery powered processor of mobile phone, wherein this processor is measured the battery supply voltage ripple of the battery of mobile phone, determine that when the battery supply voltage ripple is greater than predetermine level, and, adjust the RF receiver to improve the operator scheme of RF receiver when battery supply voltage ripple during greater than predetermine level.
According to another embodiment of the present invention, a kind of computer-readable medium stores code that is used to optimize RF receiver jamming performance is provided, and this computer-readable medium stores code comprises: the code of battery supply voltage ripple that is used to measure the battery of mobile phone; Be used to measure code in the interference of the received signal at RF receiver place; Be used for determining that measured interference and measured battery supply voltage ripple are when greater than the code of predetermine level; And be used for adjusting the code of RF receiver with the operator scheme of improvement RF receiver when disturbing and measured battery supply voltage ripple during greater than predetermine level.
The further execution mode of the present invention limits in the dependent claims.
Description of drawings
With reference to the accompanying drawing detailed description of the present invention, will know further purpose, the feature and advantage of embodiment of the present invention according to following, wherein:
Fig. 1 illustration a known mobile phone environment;
Fig. 2 illustration according to the components of mobile phone of one embodiment of the present invention;
Fig. 3 illustration according to the radio processor assembly of one embodiment of the present invention;
Fig. 4 is the flow chart of description according to the operation of the RF receiver of one embodiment of the present invention;
Fig. 5 is the flow chart of description according to the operation of the RF receiver of one embodiment of the present invention;
Fig. 6 is the computer system that is used to realize an embodiment of the invention.
Embodiment
Particular exemplary execution mode of the present invention is described with reference to the accompanying drawings.Yet the present invention can show as various ways, and the execution mode that should not be construed as limited to here to be set forth.Or rather, provide disclosed execution mode so that this specification is comprehensive and complete, and give full expression to scope of the present invention to those skilled in the art.Employed term and be not intended to limit the present invention in the detailed description of illustrative specific implementations in the accompanying drawings.In addition, same label is represented same key element in the accompanying drawing.
Fig. 1 illustration can use these 10 sub-districts from C1 to C10 in the cellular TDMA mobile radio system of the present invention.For C1 each sub-district to C10, there is the base station (being abbreviated as BS) of a correspondence, be expressed as B1 to B10.BS is positioned at cell centre and has omnidirectional antenna.Ten mobile radio stations or huger vehicle-mounted station are by vehicles power system power supply.BS is movably in the sub-district, and can move to another from a sub-district.Mobile switching centre's (being abbreviated as MSC) is connected to all BS by cable or any other connection means (as radio link).In these cables or the means some are in order briefly to be omitted in Fig. 1.MSC also can be connected to fixedly public telephone network or similarly fixed communication network by cable or link.
At run duration, mobile radio station will be got in touch with the next standing part with system that receives radio signals from different base stations to different base station by sending radio signal.Set up call, data link or other communication path between a mobile radio station that can be in system and another mobile radio station.Can also be established to the mobile radio station of another system or the calling of the user in the fixed telephone network.In this was used, all called connections did not consider that it originates from mobile radio station and still is terminated at mobile radio station.
Fig. 1 typically represents the part of big system.This system will comprise more sub-district and base station usually.Can have macrocell, each macrocell covers a zone that is covered by one group of Microcell.Usually, the quantity of mobile radio station also may be more.The base station is positioned near the cell edge and has fan anteena also is common.Some sub-districts can provide service by an above base station.Usually have several other MSC that are connected with the base station, and mobile radio station usually can be via these MSC free communications.
Fig. 2 illustration according to the mobile phone 200 of one embodiment of the present invention.Except that further feature, this mobile phone 200 also comprises and sends and receiving chip group 202, be used for mobile phone hardware and software 204 and battery 206 that the operation of mobile phone 200 is controlled.Battery 206 is to mobile phone hardware and software 204 and chipset 202 power supplies.
Fig. 3 illustration according to the radio processor 300 of one embodiment of the present invention.Except that further feature, this radio processor 300 also comprises band pass filter 301, low noise amplifier 302, frequency mixer 304, band pass filter 306, variable gain amplifier 308 and processor 310.Generally speaking, when antenna 311 receives signal, this received signal by band pass filter 301 filtering to weaken other (band outer) radio transmitter signal.Subsequently, low noise amplifier 302 is used to amplify this filtered signal from the yield value of variable gain amplifier 308.Subsequently, the received signal after 304 pairs of amplifications of frequency mixer is carried out mixing.Signal after 306 pairs of mixing of band pass filter subsequently carries out filtering.Resulting IF signal is output to the baseband processor (not shown) subsequently further to handle.The operation of low noise amplifier 302, frequency mixer 304, band pass filter 306 and variable gain amplifier can be controlled by processor 310.The operation of the radio processor 300 of a plurality of execution modes will be below be described to 5 with reference to figure 4 according to the present invention.
According to the present invention, processor 310 is connected to the battery 206 of mobile phone.Therefore,, change the operation that processor 310 can monitoring battery 206 by monitoring and measuring battery supply voltage ripple or current drain in step 401.In step 403, processor 310 compares measured battery supply voltage ripple and predetermine level subsequently.When battery supply voltage ripple during greater than predetermine level, battery 206 produces at the receiver place and disturbs.Therefore, processor 310 can be adjusted the variable gain of variable gain amplifier 308 to improve the operator scheme of (optimization) RF receiver when facing interference by known way.
According to another implementation of the invention, as shown in Figure 5, except measuring the battery supply voltage ripple as mentioned above, radio processor 300 can also be measured the interference of received signal, and when how decision adjusts the gain of low noise amplifier 302, utilize measured battery supply voltage ripple and measured interference value simultaneously.In step 501, battery supply voltage ripple or current drain that processor 310 is measured battery 206 change.In step 503, processor 310 is also measured the interference of received signal.Level of interference can measure in several ways and the present invention does not limit this.For example, processor 310 can utilize known procedure to measure the signal to noise ratio (snr) of received signal.In addition, processor 310 can detect the received signal intensity indication grade of received signal.
In step 505, in case measured level of interference, processor 310 just compares measured battery supply voltage ripple and measured interference value and predetermined ripple grade and level of interference subsequently.When measured battery supply voltage ripple and measured interference value during all greater than predetermined ripple grade and level of interference, processor 310 is adjusted the gain of variable gain amplifiers 308 to improve the operation of (optimizations) receiver when facing interference.Except the RE receiver was better operated, the present invention also provided multiple other beneficial effect.The first, under the situation that does not have interference, can loosen the filter requirement in the RF receiver, this will cause the raising of receiver overall performance in the mobile phone application.The second, because the less filter loss between transmitter and the antenna can be realized the lower power consumption of other transmitter.The 3rd, by reducing the interference volume in the receiver, the decay in the baseband filter 301 also can reduce, and this will cause the better overall systematic function.
In another embodiment of the invention according to Fig. 6, schematically illustration a kind of computer-readable medium 600.Realize on this computer-readable medium 600 that the computer program of handling for computer 613 610 that is used to optimize RF receiver jamming performance is arranged.This computer program comprise the battery supply voltage ripple of the battery that is used to measure mobile phone code segment 614, be used for measure R F receiver place received signal interference code segment 615, be used for determining measured interference and measured battery supply voltage ripple when all greater than the code segment 616 of predetermine level, be used for when disturbing and the measured battery supply voltage ripple code segment 617 of adjustment RF receiver to obtain optimum operator scheme during all greater than corresponding predetermine level.
Hereinbefore by invention has been described with reference to embodiment.But, can realize other execution mode except that above-mentioned execution mode within the scope of the invention equally.Within the scope of the invention, can provide other distinct methods step except that method step as described above, wherein carry out this method with combining of software by hardware or software or hardware.Should be appreciated that except described combination, different characteristic of the present invention and step can otherwise make up.Scope of the present invention is only limited by appended Patent right requirement.
Claims (14)
1. method that the jamming performance that is used for the RF receiver in the mobile phone of operating in the tdma communication system is optimized, this method may further comprise the steps:
Measure the battery supply voltage ripple of the battery of described mobile phone;
Determine that when described battery supply voltage ripple is greater than predetermine level;
When described battery supply voltage ripple during, adjust the RF receiver to improve the operator scheme of this RF receiver greater than described predetermine level.
2. method according to claim 1, this method further may further comprise the steps:
Measurement is in the interference of the received signal at described RF receiver place;
Determine that when measured interference and measured battery supply voltage ripple are all greater than corresponding predetermine level;
When described interference and measured battery supply voltage ripple during, adjust described RF receiver to improve the operator scheme of this RF receiver greater than corresponding described predetermine level.
3. method according to claim 2, wherein, the described step that is used to measure interference comprises the signal to noise ratio of measuring received signal.
4. method according to claim 2, wherein, the described step that is used to measure interference comprises the RSSI grade of measuring received signal.
5. method according to claim 2, wherein, the described step that is used to measure interference comprises signal to noise ratio and the RSSI grade of measuring received signal.
6. method according to claim 1, wherein, described RF receiver is measured the battery supply ripple of the described battery of described mobile phone.
7. method according to claim 1 wherein, is improved the operation of described RF receiver by the variable gain of adjusting the amplifier in the described RF receiver.
8. the RF receiver in the mobile phone of in the tdma communication system, operating, this RF receiver comprises:
Be used for carrying out to received signal first band pass filter of filtering;
Be used for low noise amplifier that filtered received signal is amplified;
Be used for frequency mixer that the signal after amplifying is carried out mixing;
Be used for the signal after the mixing is carried out second band pass filter of filtering;
Battery powered processor by described mobile phone, wherein, this processor is measured the battery supply voltage ripple of the described battery of described mobile phone, determine that when described battery supply voltage ripple is greater than predetermine level, and, adjust described RF receiver to improve the operator scheme of this RF receiver when described battery supply voltage ripple during greater than described predetermine level.
9. RF receiver according to claim 8, wherein, described processor is further measured the interference in the received signal at described RF receiver place, when determine measured interference and measured battery supply voltage ripple all greater than corresponding predetermine level, and adjust described RF receiver to improve the operator scheme of this RF receiver during greater than corresponding described predetermine level when described interference and measured battery supply voltage ripple.
10. RF receiver according to claim 9 wherein, is recently measured described interference by the noise of measuring received signal.
11. RF receiver according to claim 9 wherein, is measured described interference by the RSSI grade of measuring received signal.
12. RF receiver according to claim 9 wherein, is measured described interference by signal to noise ratio and the RSSI grade of measuring received signal.
13. method according to claim 1 wherein, is improved the operation of described RF receiver by the variable gain of adjusting the amplifier in the described RF receiver.
14. a computer-readable medium stores code that is used to optimize the jamming performance of RF receiver, this computer-readable medium stores code comprises:
Be used to measure the code of battery supply voltage ripple of the battery of mobile phone;
Be used to measure code in the interference of the received signal at described RF receiver place;
Be used for determining that measured interference and measured battery supply voltage ripple are when all greater than the code of corresponding predetermine level;
Be used for when described interference and measured battery supply voltage ripple during, adjust the code of RF receiver with the operator scheme of improving this RF receiver all greater than corresponding described predetermine level.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/047,596 US8175561B2 (en) | 2008-03-13 | 2008-03-13 | Automatic optimization of RF receiver interference performance |
| US12/047,596 | 2008-03-13 | ||
| PCT/EP2008/062192 WO2009112091A1 (en) | 2008-03-13 | 2008-09-12 | Automatic optimization of rf receiver interference performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101965699A true CN101965699A (en) | 2011-02-02 |
| CN101965699B CN101965699B (en) | 2013-06-26 |
Family
ID=40070850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880127807.4A Expired - Fee Related CN101965699B (en) | 2008-03-13 | 2008-09-12 | Automatic optimization of RF receiver interference performance |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8175561B2 (en) |
| EP (1) | EP2277273B1 (en) |
| JP (1) | JP2011518454A (en) |
| CN (1) | CN101965699B (en) |
| AT (1) | ATE532279T1 (en) |
| WO (1) | WO2009112091A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10014705B2 (en) | 2015-04-02 | 2018-07-03 | Apple Inc. | Signal quality dependent throttling of devices for reducing electromagnetic interference |
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- 2008-03-13 US US12/047,596 patent/US8175561B2/en not_active Expired - Fee Related
- 2008-09-12 WO PCT/EP2008/062192 patent/WO2009112091A1/en active Application Filing
- 2008-09-12 AT AT08804154T patent/ATE532279T1/en active
- 2008-09-12 EP EP08804154A patent/EP2277273B1/en not_active Not-in-force
- 2008-09-12 CN CN200880127807.4A patent/CN101965699B/en not_active Expired - Fee Related
- 2008-09-12 JP JP2010549020A patent/JP2011518454A/en active Pending
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| CN1311923A (en) * | 1999-04-02 | 2001-09-05 | 三菱电机株式会社 | Mobile communication terminal |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2277273A1 (en) | 2011-01-26 |
| CN101965699B (en) | 2013-06-26 |
| EP2277273B1 (en) | 2011-11-02 |
| US8175561B2 (en) | 2012-05-08 |
| WO2009112091A1 (en) | 2009-09-17 |
| US20090233553A1 (en) | 2009-09-17 |
| JP2011518454A (en) | 2011-06-23 |
| ATE532279T1 (en) | 2011-11-15 |
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